Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 cbb719805bcd5c0e…

MALICIOUS

Office (OLE) / .XLS

317.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: f7e95f7491740380b6b037e498fc90da SHA-1: ba2fca37f49ecbc7a32e43e4ded9602627907d25 SHA-256: cbb719805bcd5c0e7c4388ab8a51eed0760948b649773ec35894d4379e9c276e
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications

The file is an Excel 4.0 macro sheet, indicated by the OLE_XLM_AUTOOPEN heuristic. The ClamAV detection name 'Doc.Downloader.Docusign0521-9864805-0' suggests a downloader disguised as a document. The embedded URL 'https://mercados247.com/ds/1602.gif' is likely used to fetch and execute a second-stage payload. The document body text, though fragmented, contains references to 'DocuSign' and 'Download', reinforcing the lure.

Heuristics 3

  • ClamAV: Doc.Downloader.Docusign0521-9864805-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign0521-9864805-0
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mercados247.com/ds/1602.gif�
    • https://mercados247.com/ds/1602.gif

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